Box-covering machine



June 9, 1925. 1,540,900

C. H'. NITSCH ET AL BOX COVERING MACHINE l N VEN TORS LA TTORNEY.

June 9, 1/925.

1,540,900 c. H. NlTscH ET AL BOX COVERING MACHINE Filed May l0. 192s 8 sheets-Sheet 2 INVENTORS Mig@ June 9, 1925.

1,540,900 c. H. `Nn'scl-l ET AL BOX COVERING MACHINE Filed May 10, 1923 SheetSI-Shet 5 INVENTORS M/A/l/MM By 7M df@ ATTORNEY.

June 9,v 1925,

C. H. NITSC'H ET AL Box coVERING MACHINE Filed May l0, 1923 8 sheetsAsh-et 4 il A WIV/ww ii ATTORNEY.

June 9, 1925. 1,540,900 l c. Hf. Nlrscl-l ET AL Box covERING MACHINE `filed May 10, 1.925 i s sheetspsh'eet f a m m d Il, j( I mi si Y Ii I 1 L()` SL i m Lg Si 2 1\ Si l i Il Sr 1 l MILVI/V/w BY. www 7% Zu ATTORNEY.

June 9, 1925.

" c. H. NlTscH ETAAL Box covERING'MAcHINE Filed May 10, 1923 e sheetsLsheet 6 @Z0 ATTORNEY.

June 9, 1925. 1,540,900

c. H.v NlTscH ET AL BOX COVERING MACHINE Filed May 10. 192s 8 sheets-sneek V'f E' u' '1V-lf I N VEN TORS @mL/wm@ Bw/ mi@ @ATTORNEY,

June 9,l 1925.

c. H. Nl'rscH ET A1.

B OX COYERING MACHINE a sheets-sheet s Filed May 10, 1923 NVENTORS I l! 1 M MM .By M @if ATTORNEY.

Patented June 9, 1925. l

' UNITED 4STATES PATENT OFFICE.

CHARLES H. NITSCH AND THEODORE A; FEDERWITZ, OF PHILADELPHIA, PENNSYL- VANIA, ASSIGNORS TO STOKES AND SMITH COMPANY, 0F PHILADELPHIA, PENN- SYLVANIA, A CORPORATION O F PENNSYLVANIA. i

nox-comms MACHINE.

blank, or for forming a box blank into boxform and applying a cover blank serving both to holdy thebox blank elements in boxforming position and to cover the box.

In accordance with our invention` there are provided slides, units or slide units adjustable uponA slides or guides to different positions with respectto the work-carrying structure to accommodate boxes or box cov- .ers of various sizes, each' slide, unit or slide unit Aitself comprising or including cam structure for effecting in predetermined sequence and time relation movements of the individual structures carrying and actuating such tools or elements as brushes, rollers, corner lap fingers, .edge turn-in fingers, pressure -blocks and the like, or their equivalents. It is a feature of our inyention the afore- ,said units and their tools may be utilized for applying wrappers or covering materials not only to simple or `plain boxes and box covers but also to boxes and box covers having extension edges.

Further in accordance with our invention, there arel formed novel adjustable cushioning 'ir resiliently vyielding` means for andl co-acting with the cover-applying rollers.

Further in yaccordance' with our invention, there is provided novel structure embodying corner lap fingers for applying to the ends of the box the extensions on the side covering flaps ofthe blank.

F urther-in accordance with our invention,

there is provided novel structure fior efl'ect- -by ying yielding or cushioned uniform pressure upon the work by the'.y pressure blocks.v

OurJ invention resides in the structures and structural. features and combinations hereinafter described .and claimed.

Application led Hay 10, 1923. Serial No. 638,116.

For an illustration of some of the various forms'v our apparatus mav take, reference 'is to be had to the accompanying drawings, in which: l

Fig. 1 is a side elevational view,vpartially` in section, showing an assembly of three of the slidesl or units,vthe fourth being omitted for clearness.

Fig.l 2 is a plan view of an assembly of the four slides or slide units'for applying ltjhe cover blank to the `sides and ends of the Fig. 3 is a vertical sectional` view, parts in elevation, ofoneof the slides or units promy A vided with'tools for applying the covering blank to the sides of a box.

Fig. 4 is a vertical sectional view, parts in elevation, of a. modification of the structure of Fig. 3.

Fig. 5 is a vertical sectional View, parts in elevation, of a slide or slide unit provided with instrumentalities for'applying a cover blank to the ends of the box.

Fig. 6 is a fragmentary plan view .of a roller and its support. y

Fig. 7 is an end elevational view, partly insection, on the line 7-7 of Fig.. 6.

Fig. 8 is a plan view, partly in horizontal section, of the pressure block and its actuatin!! and supporting plate.

Fig. 9 is a side 'elevation of the structure shown in Fig. 8. 'y

Fig. 10 is a fragmentary plan view of the corner la-p fingers and their supporting and actuating plate.l

Fig. 11 is an end elevational view ofthe structure shown in Fig. 10.

Fig. 12 is a fragmentary plan View of the turn-in linger and its supporting and actuating platen p Fig. 13 is an end elevational view of the structure shown in Fig. 1 2.`

Fig. -14 is a development of the several cams indicating the directions and timing ofthe several movements controlled there- Referring to Figs. 1 and 2, there is shown an assembly of the slides, units or slide units, 1 and 2. the units 1, 1 being-disposed 'opposite each other in co-operative relationwlth the sides of the box B, and the units or i slides 2, 2 being disposed opposite each other and in co-operative relation with the ends of the box B.

The units 1 and 2 are mounted upon any suitable support, as the base or table 3, provided with slide o r guide ways 4 upon which rest and slide the laterally projecting members 4 upon the units 1 and 2, which are slidable or adjustable toward or away from the center of the structure or machine for accommodation o'f boxes of different sizes and proportions as regards length of sides and ends. Any suitable means, not shown, are provided for clamping the units to the base or table 3 in their adjusted or predetermined positions.

The units 1 and 2 are grouped around th platen 5 upon which the box and its cover.

blank engage,- the platen being supportedv bya vertical column or plunger 6 movablevertically within the cylinder or housing 7,

in which is disposed a spring 8 opposing downward movement of the platen 5 andy restoring it to the normal position indicated in Fig. 1 upon completion of a cycle of operations.` Disposed above the platen 5 is the form block or form plunger comprising the main form block 9 a the sepa rate supplemental or auxiliary Ifo m block 10, the members 9 and 10 partaking of vertical movements in unison with and independently of each other, such/ movements having extents determined and timed by any suitable structure, as, for example, by cam structure, such, for example, as mechanism A of Letters Patent No. 691,329, or any equivalent structure, the members 9 and 10 corresponding, respectively, with the members 49 and 50 of said Letters Patent.

Referring to Fig. 3, a unit lcomprises the housing or casing members 11, within which is disposed the cam barrel or cylinder 12, 'rotatable in bearings 13, 13, and having secured thereto at one end'the gear 14 meshing with and driven by the gear 15,

meshing with and drivenl by the long gear t or pinion'- 16 secured upon the shaft 17, which extends across tothe opposite unit 1 where there is secured thereon a similar elongated pinion or gear 16 -driving the gear 15 `of the'secpnd unity 1. Asindiciated in Fig. 2, the (shaft 17 isv driven by the bevel gear 18, secured thereto,` driven by the bevel 4gear l19, secured upon shaft 2O and driven by the bevel gearA 21, in turn driven by the bevel gear 22, `secured upon the vertical shaft 23, which latter is driven by any source of power,` which also drives the cam or uivalent `structure which actu. ates the melenlbers .9 and 10.

The gear 15 is secured upon and rotates the second c'am barrel or cylinder `24 disosed within the casing 11and having'bearings at 25, 25. The cam barrel 12 1s provided with the circumferentially continutilinear movement parallel to the axis of rotation of the cam barrel 12.

Carried by the frame or plate 30 at its forward end is the transversely extending support or member 31, which is provided at its opposite ends, as indicated in Figs. 3, 6 and 7, with the bearing supports 32, within each of which is disposed the shaft 33 between a shouldenon which and the end of the recess or chamber in the member 32 is disposed the helical spring 34, which is maintained under suitable degree of compression by adjustment of the nut 35, threaded uponshaft 33, and locked by nut 36, adjustment of nuts 35 serving to align roller 40. The spring 34 serves as a cushzion resiliently opposing inward movement which is mounted the roller 40, of any suit-` able material, either rigid or yielding. Carried by the member 31, and therefore by the frame or plate 30, is the bar 4l carrying the numerous spreader brush units 42 disposed above the roller 40 in arcuate alignment, their outer ends in arcuate alignment, the different 'brush units having different lengths at different positions longitudinally of `the bar 41, which latter is pivoted at 43 in the brackets 44 carried by the member 31.v f' v Disposed in the second roove or slot 27 of the cam barrel 12 is t el roller or cam follower 45 carried upon the pin or stub shaft 46 carried by the second frame or plate 47, which is movable preferably in- -longitudinally of which are the bracket.

members 49, which may be secured in any suitable position upon the bar 48 by the set screws 50. Each of the brackets 49 carries the vertical pivot pin or shaft 51, upon which ia pivoted the bracket 52, to which is clamped, by\ clamping member 53 held by screw 54, the cornerlap finger 55 having at its forward `end the vertically extending rounded ribs 56' for engaging the` Aextensions on the. side flaps of the cover blank for lapping said extensions around theA corners o the box into engagement ioo with the ends thereof, suitable pressure being appliedto each linger 55 by a spring 57, Fig. 11 wrapped around the pivot 51- and engaging at 1ts opposite ends with the brackets 49 and 52, respectively.

Thesecond cam barrel or cylinder 24 o`f the unit `1 has thecam slots or grooves 5.8

and 59. 'Disposed in the cam groove 58 is the roller or cam follower 60,.carried upon the pin or stub shaft 61 carried by the frame or support 62 movable "preferably inA a rectilinear path parallel to the axis of rotation of thecam barrel 24 upon the slide or guide ways on the casing 11. Carried upon lthe forward end of theframe 62 'fs the transversely extendingbar or A.support s 63, Figs. 3, 12 and 13, toxwhich is secured by screw 64 a clamping member 65, between which and the member 63 is clamped the plate or turn-in finger 66. f

In the cam.slotl59 `is disposed the roller or cam follower' 67.,carried by a pin or stub .Y shaft 68, carried by the support or frame 69,

transversely extending 'bar 72 upon the i frame 69. Springs `73, attached at their A forward ends to the pins 71 and at their rear ends tothe plate 69, exert a pull upon the bar 72, holding it against the abutments or stops 74, 74 at the forward endsof rods 75,

whose forward portions are of suiiciently small diameter freely to pass through the i tion 75. .By these means each interiorly threaded sleeves or nuts 76, into which thread the rear portions 77 of the rods 75. Surrounding the rods 77 are the helical springs 78, which with the nuts or.

sleeves 76 are disposed in recesses in the sides of the frame 69.'` Each rod .77 has at'` its rear end a head 79 for application of a Spanner or wrench fdr rotating therods 77. By rotating the rod 77, 'it threads further into or outwardly from its nut or sleeve 76, thereby advancing or withdrawingthe stop 74 at the forward end of its'forward poror abutments 74 is -adjustable independently of the other without` however, affecting the sp1-ing 78- whereby all the springs 78, notwithstanding difl'erent adjustments of the be stops 7 4,exert equal forces in opposition to the rearward thrust of the member 72.

The bar 72 is slotted, as indicated in Fig.

3, and in the slot is disposed the pressure. `bar or block 80, held in any desired position by clamping screws 81. The pressure baror block 80 has upon its front face a pad 82, of felt or any other suitable material. The pressure blocks, when the frame 69 .is

moved forwardly toward the box, engages of the stops fingers 66 thev bor:J and the pressure is transmitted backwapdly through the bar 72 and the stops 74 and rod-s 75 to the springs 78,the aforesaid adjustment of the stops 74 servfing to ensure application of uniform pres" sure by the `pressure block throughout its area of engagement'with the box. p

l Referring to Fig. v4, there, is shown a. modified or substitute form of unit for effecting the 'functions described inconnection with Fig; 3. In this instance, in lieu of the two cam barrels of Fig. '3, there is utilized a single cam barrel 12, rotatable upon suitable bearing structure 13, and

having the four cam slots or grooves 26, 27,' 58 and 59, with which,vas before, co-act the rollers orcam followers 28, 45, 60 and 67, respectively, for effecting the timed forward and return movements `oftthefrannes 30,47, 62 and 69, respectively. In this case, how-v ever, the frames or supports 30 and 47 are disposed abQVe and the frames or supports v 62 and 69 are disposed below the cam member- 12a, which latter is .driven by the gear 14, secured thereto, such gear meshing with the elongated gear or pinion 16, as gear 15, Fig. 3,"meshe'swith gear 16. f

Referring to Figs. 1, 2 and 5, the slides, units or slide units. 2, for applying the cover blanks to the ends of the box, are in general similar to the units 1 hereinbefore described.' cylinder Each comprisesI a cam barrel or 12b having bearings at 13b' in the housing on casing 11 vand having secured thereto the .driving gear'14 meshing with and driven by the elongated gear o-r pinion 16a, secured tends across to the opposite unit` 2, where it Figs. 1 and 2, one of the elongated gears upon and driven by the shaft 17 which ex- 16a has a'bevel gear onfone' end thereof which is driven bythe bevel gear 22a secured upon and driven by the vertical shaft 23, which is driven by the same source of power. which drives the shaft 23 and the cam \mechanism which` operates the plungers 9` and 1o.

The cain barrel 12b is provided with the three cam slots or grooves 26, 58 and 59, with which co-a'ct, respectively, the rollers or cam followers 28, 460 and 67 for actuating and controlling,respectively, the frames 30, 62 and 69, the three framesor supports lnginl this instance all `located upontho' same sidef/ tlie cam barrel v12". As before, they fra-me 31 carries the brushes 42 and roller 40; this'l frame 62-carries the turn-in s an sure block 80. p

As indicated `in Fig. 5, the' mounting of the roll/er. 40 and brushes 42 upon the frame 30 is in some respects different from the .mounting of these members'upon thev frames 30 of Figs. 3 and 4. In the present instance,

the frame 69 carries the presthere is pivoted at 83, at opposite sides ot' the front end of the frame 30, the transversely extending member 31 which, as before, is provided at its ends with the chambered members 32 carrying the members 37, in which the roller 40 has bearings. .'lthe pivotal structure described permits rotation of the roller 40 and brushes 42 about the pivots 83 to position away from their normal position to permit access from above to the members 66 and 80,. below, and their associated parts. g

lReferring to Fig. 14, there are shown developments of the cam slots for one complete circumference 0r one complete revolution of each o-f the cams, all the cams whose slots are shown preferably making one complete revolution lin the same period of time and the 'changes in direction and displacements of the cam slots being timed in substantially the relations indicated in Fig. 14, it being understood, however, that any other equivalent arrangement may be employed, as may be found suitable or desirable.

`In Fig. 14,. distances horizontally`represent time; while distances vertically indicate the departures or extents of movement of the various frames 30, 47, 62 and 69, and the main and auxiliary plungers or form blocks 9 and 10, it being understood, however, that Fig. 14 is merely illustrative and that the relative timings and the relative extents of departure and movements -of the frames and plungers may be otherwise proportioned.

In Fig. 14, the developed cam slots are indicated at 26, 26, 27 58, 59, 84 and 85. The line 26, indicating camv slots 26 of the units 1, shows the timing of the forward and return movements of the rollers 40 and brushes 42, which apply the wrapper or cover blank to the sides of thebox. Line 27 indicates cam slots 27 of units 1, and shows the timing of the forward and return movements of the corner lap-.fingers as effected the units 1. Line' 26a, indicat-.

ing cam slot 26a of units 2, shows the forward and return movements`of the rolls 40 and brushes 42 which apply the wrapperor cover blank to the ends ofthe box. Line 58, indicating cam slots 58 of units 1 and 2, shows the forward and return movements of the turn-in fingers 66 operating both at the sides and ends of the box. Line 59, indieating cam slots 59 of units 1 and 2,`sl10ws the forward and return movements of the pressure' blocks 80, which apply pressure to the wrapper or cover blank both to the sides and ends of the box. The line 84V indicates the relative descent "and return movements Iand their timing of the main plunger or form block 9, and the line 85 indicates the correspondin movements and their timing of the auxiliary or associated plunger 5 or form block 10.

alent, upon one side thereof; The box with the wrapper or cover blank adhering to its bottom is placed upon the form block structure, 9, 10, the plungers -9 and l() being in the relation indicated in Fig. 1 at or approximate the upper end of their vertical travel. The plungers 9 and 10, carrying the box and the wrapper or cover adhering toits bottom, then descend, the box and wrapper engaging upon the upper surface of the 'platen 5, which yields and descends in opposition to spring 8 as the members 9 and 10 descend. During the initial downward movements of the plungers 9 and 10, as indicated by the inclined portions a, a of lines 84 and 85, ig. 14, the box and cover are forcedv downwardly past the brushes 42 and rollers 40. of the units 41, which have advanced the brushes and rollers, as indicated by portion a of line 26, Fig. 14, toposition to cause the brushes to'fold the side flaps of the cover blank upwardly into engagement with the sides of the box, the descending box passing the side rollers 40 immediately after passing the brushes, the rollers forcing the cover into intimate contact with the sides of the box, where it adheres because of the previous application of adhesive to the cover blank as a whole. The box then comes torest in position opposite the corner lap lingers 55 of units 1, the rest period being indicated by the portions b of lines 84 and 85, Fig. 14. During this period of rest, the lingers 55 are advanced by the cam slots 27 of the units 1, as indicated by the portion a of'line 27, the fingers 55 folding inwardly along the ends of the box the extensions .onl the side iaps of the cover blank, the springs 57 exerting pressure through the fingers 55 upon the extensions, causing them to adhere to the ends of the box. The fingers 55 remain in their advanced position,

for the4 time indicated by the portion b of line 27, Fig. 14.` While the fingers 55 are advancing, as aforesaid,` the end brushes 42 and end rolls 40 are advanced by cam slots 26a of the units 2, these end brushes and rolls bei-ng disposed vertically below the lcorner lap fingers 55, as indicated in Fig. 1, these end brushes and rolls being advanced during the'time indicated by the portion a of line 26, Fig. 14, and remaining in their fully advanced position for the time b indicated on said line 26a; The auxiliary plunger4 10 recedes or rises slightly, as indicated by portion c of line 85, separating from the main plunger 9, which during the tlme c,

line 84, descends further, and during this period forces the box and cover downwardly past the end brushes 42 and end rolls 40 which, as aforesaid, have .been previouslyv advanced, this action applying to the ends vof the box or end fiaps of the cover blank 1n position overlying the aforesaid extensions on the side flaps which have been turned in by the corner lap fingers 55. The auxiliary plunger 10 remains in the posltion to which it has receded for the time indicated by` the portion d of line 85. After the -downward movement indicated by ,the portion v0 of line 84, the plunger 9 comes to rest for the period `the side and end fiaps of the cover blank,

whichv have been projecting above the upper edge of the box, to horizontal position,- correspondin'g With the under side-ofv the fingers 66 indicated in dotted lines in Figs. 3, 4 and 5, this action occurring while the auxiliary plunger 10 is spaced above the vmain plunger 9, the fingers 66 passing between the plun ers 9 and 10 for this operation. As the ngers 66 are advanced, the pressure blocks 80 are advanced during the time represented by the portion a of line 59, Fig, 14, by the four cam slots 59 in the four units 1 and 2, into light engagement with .the sides and ends of the box for a period represented by the portion?) of the aforesaid li'ne 59. The corner lap fingers 55 have remained advanced during. substantially -these last named operations asindicated by the portion I) of the aforesaid line 27, the downward movement of the box during these periods causing a wiping of the fingers 55 upon the ends of the box as it descends past them into co-action with the end brushes and rollers 42 .and 40. lThe corner.

lap fingers 55 are eventually returned to normal position at and during the time indicated by the portion o of the aforesaid line 27. After the turn-in fingers 66 have advanced and are returning, the auxiliary plunger 10 again descends during the period indicated by the portion e of the aforesaid line 85 to the position and for the time indi-` cated by the portion f of said line 85, in so doing folding the ends of the side and-end flapsof the cover blank from horizontal osition, to which moved by the turn-in ngers G6, downwardly to verticalposition in contact with theinner surfaces of the verti'-.

cal sides and ends of the box, the auxiliary `-plunger 10 in moving as aforesaid again coming into contact or close relation with the main plunger 9,.which descends further during the-'time indicated byf the portion e `of the aforesaid line 8,4 to the position and for the time indicated by the port-ion f of said line, the pressure blocks 80 being advanced through the periods represented by (l, e and f of line 84, the pressure blocks, v however, receding-slightly during the period indicated by the portion 0 of the aforesaid line 59 to position and for the time corresponding witlrv the` portion-0fefsai'dline, whereaf ter they are again advanced during the time indicated by the portion e to the position and for the time indicated by the portion f, and during this time they are further in advance thanJduring the period represented by the portion -b of said line 59, exerting correspondingly greater pressure upon the sides and ends of .the box and then'returning to normal position during the time represented by the portion g of-said line 59. The application of the wrapperl or cover to the box is now completed, all of the brushes 42, rollers 40, corvner lap fingers 55, turn-in fingers 66 and -plungers during their return movement, as

well understoodv in the art, the box when stripped from the plungers being then kicked off from the platen 23 into a chute loo or other suitable receptacle, the platen 5 i rising toits normal position indicated in Fig. 1 upon upward return movement of the plungers 9 and 10.

Apparatus of the character described may be utilized also for simultaneously forming a box from a box blank and applying the wrapper or cover. A box blank, comprising a body portion with side and end. fiaps, maybe placed in register with the cover blank, coatedwitlradhesive, and the sides and ends of the box may be folded upwardly to their final and vertical positions, the application of the wrapper or vcover serving to stay them and h old the box blank in box formation.

As wellunderstood in this art, when the box o r box cover`is of that type having an Iextension edge, there maybe used, in lieu of each of the simple or plain rollers 4() as hereinbefore described, that type of roller omitted.. It accordingly will be understood that in-place'of the simple. or plain rollers 40, and brushes 42, carried by the frames 30, as hereinbefore described, those frames will carry rollers of the type suitable for applying the wrapper or cover material to the extension edge of the box;I or any equivalent mechanism may be employed.

For the sake of brevity in the appended claims, the term tool is generic to any instrument which operates upon, actuates or controls the coiffer or wrapper, or any portion thereof, or the box or any part thereof, and includes any of the herein described brushes, rollers, corner lap fingers, turn-in fingers, and pressure blocks, and their equivalents.

What we claim is: l,1. In a box-covering machine, the-combination with a support, of a u nit adjustable to different positions thereon for operation upon boxes 'o f different dimensions, saidunit comprising cam structure, a tool controlled thereby, and means for rotating said cam structure always in onev direction.

2. In a vbox-covering machine, the combination with a support, of a unit adjustable to different positions thereon for operation upon boxes of different dimensions, said unit comprising cam structure rotating always in one direction, and a tool positively advanced by Said cam.

3. In abox covering machine, the combination with a support, of a unit adjustl'able to different positions thereon for oper- 5. In a box-covering machine, the combination with a support, of a unit for each v of a plurality of faces of the box, said units being individually adjustable upon said support for operation upon boxes of different dimensions, each of said units comprising cam structure, and a` tool controlled thereby, and meansl common to said cam structures for rotating them always in one direction.

6. In a box-covering machine, the combination with a support, of a air of units adjustable uponsaidsupport or operation upon boxes of diii'erent dimensions., each of said units comprising cam structure rotating always in one direction and a tool positively advanced and returned thereby, and means common to said units for driving the cam structures thereof.

7. In a box covering machine, the combination with a. sup ort, of a` air of units adjustable uponsai support` or operation upon boxes of different dimensions, each of said unitscomprising cam structure and a tool controlled thereby, a gear secured to each of said camstructures, elongated gears driving Said gears and along which said gears are adjustable upon adjustment of said units, and a common driving shaft for said elongated gears. l i

8. In a box-covering machine, a tool operating unit lcomprising rotary camstructure, a tool controlled thereby, a gear secured to said cam structure, and an elongated gear meshing with said gear and along which said gear is ad'ustable.

9. lIn a box-covering mac ine, a tool operating unit comprising rotary cam structure, a tool cont-roller thereby, a gear secured to said cam structure, and an elongated gear meshing with` said" gear and alon which said unit with its gear yis ad justa le'.

10. In a box-covering machine, the conibination with a support, of a tool operating unit adjustable to different sitions thereon and comprising a rotata le cam barrel having'a cam slot, a cam follower engaging in said slot, a' frame actuated by said cam follower, and a tool carried by said frame.

11. In a box-covering machine, a tool operating unit comprising a rotatable cam barrel having a cam slot, a cam follower engaging in said slot, a frame actuated by said cam 'follower in a path substantially parallel to the axis of rotation of` said cam barrel, and a tool carried by said frame.

12. In a box-covering machine, the combination with a support, of a tool operating unit adjustable to different positions thereon and comprising a rotatable cam barrel havinga cam slot, a cam follower engaging in said slot, a frame actuated by said cam follower, a tool carried by said frame, and

a common support for said cam barrel 'and frame.

13. In a box-covering machine, a tool operatingunit comprising a rotatable cam barrel having a cam slot, a cam follower engaging in said slot, a frame actuated by said cam follower, a tool carriedby said frame, and a housing for said cam barrel` said frame projecting to the exterior of said housing.

14. In a'box-covering machine, a tool operating unit comprising a rotatable cani barrel having a cam slot, a cam follower engaging in4 said-"slot, a frame actuated by said cam follower, a tool carried by said frame, and a housing for said cam barrel, said frame projecting to the exterior of said housing and sliding thereon.

15. In a box-cvering machine, a tool operating unit comprising a rotatable cam barrel having a cam slot, a cam follower engaging in said slot, a frame actuated by said cam follower, a tool carried by said frame,

a housing for said cam barreLsaid frame projecting to theeXterior of said housing, a gear secured to said -cam barrel, and a driving gear exterior to said hjousing'driving said first named-gear, 1

'16. In a bon-covering machine, a tool operating unit comprising a rotatable cani barrel having a cam slot, a cam follower engaging in said slot, a frame actuated by said cam follower, a,tool carried by said frame, a housing for said cam barrel, said frame projecting to the exterior of said housing, a gear secured to said cam barrel and extending to the exterior of said housing, and an elongated gear on the exterior of said houjsing driving said first named gear and along which said unit is adjustable. 1

17. In a box-covering machine, the conibination with a support, of a tool operating unit adjustable to differentpositions thereon and comprising a cam bai-rel having a plurality of cam slots, a cam follower in each of said slots, a plurality of frames actuated by said cam followers and disposed upon the same side of said cam barrel, and'v a tool carried by each of said frames.

unit adjustable to different positions tlierc.- on and comprising a' cam barrel having a plurality of cam slots, a cam follower in each of said slots,`a plurality `of frames actuated by said cam followers and disposed upon'opposite sides of said cam barrel, and

a tool carried by each of said frames.

19. In a box-covering mach-ine, a tool operating unit comprising a cam barrel having a plurality'of cam slots, a cam follower in each of said slots, a plurality of frames actuated by said cam followers and disposed upon the same side of said cam barrel, and a tool carried by each of said frames, said frames having paths of movement substantially parallel with the axis of rotation of said cam barrel.

20. In alboX-covering machine, a tool operating unit comprising a cam barrel hav-l ing a plurality of cam slots, a cam follower in each ofsaid slots, a plurality of frames actuated by said cani followers and disposed upon opposite sides of said cam barrel. and a tool carried by each of said frames, said frames having paths of movement substantially parallel with the axis of rotationv of said cam barrel.

21. In. a box-covering machine, a tool operating unit comprising a rotarycam., a cam follower co-acting therewith, a frame slidable by said cam follower' substantially parallel to the axis of rotation of said cani, and a corner lap finger pivoted to said frame for movement about an axis normal to the plane of movement of said frame.

22. In a box-covering machine, a tool operating unit comprising a plurality of cams rotatable as a unit, a cam follower co-acting with each of said cams, frames actuated by said cam followers and movable in paths parallel with the axis of rotation of said cams, brush structure carried by one of said frames, and corner lapping finger structure carried by another of said frames.

23. In a box-covering machine, a tool operating unit comprising a plurality of cams rotatable as a unit, a cam follower co-acting with each of said-cams, frames actuated by said cam followers and movable in paths parallel with the axis of rotation of said cams, ro-ller structure carried by one of said frames, and corner lapping finger structure carried by another of said frames.l

24. In a box-covering machine, a tool operating unit comprising a plurality of cams rotatable as a unit,a cam follower co-acting with each of said cams, frames actuated by said cam followers and movable in paths parallel withthe aXis of rotation of said cams, brush and roller structures carried by one of said frames, and corner lapping -nger structure carried by another of said 4 frames.

18. In a box-covering machine, the combi` nation with a support, of atohoperatingrotatable as a unit, a cam follower co-acting. with each of said cams, frames actuated by said -cain 'followers and movable in paths parallel with the axis of rotation of said cams, and turn-in finger and pressure block structures carried by different of said "100.

frames.-

26. In a box-covering) machine, a tool operating unit comprising a plurality of cams rotatable as a unit, a cam/follower co-acting with each of'said cams, frames actuated by said cam followers and movable in paths yparallel withi thenaxis of rotation of said cams, and corner lapping finger and turnin finger structures carried by different of said frames. j

- 27. .In a box-covering machine, a tool operating unit comprising a plurali-ty of cams rotatable as a uni-t, a cam follower co-acting with each of 'said camsfframes actuated by said cam followers and movable in paths parallel with the axis of rotation of said cams, brush and roller structures carried by one lof said frames, and turn-iii finger and pressure block structures carried, respectively,'by' different of others of said frames.

28. In a box-covering machine, the combination with a support, of a unit adjustable to different positions thereon, said unit comprising a cam structure rotating always in one direction, anda plurality of tools forwardly vactuated at different times by said. cam structure..

29. In a box-covering machine, the combination with a support, of a unit adjustable to different positions thereon, said unit comprising a cam structure rotating always 31. Ina box-covering machine, the com-- bination with aI support, of a unit adjustable to diiierent positions thereon, said unit comprising a cam structure rotatable conplurality tinuously in one direction and having a of cam surfaces, and a plurality of tools positlvely advanced and returned at different times by the respective cam surfaces.

32. In a box-covering machine, the combination with a support, of a un-it adjustable to different positions thereon, said unit comprising a rotatable cam barrel having a plurality of cam slots disposed in different positions longitudinally of the axis of rotation, a plurality ,of tools, and followers engaging in said .slots for positively advancl ing said tools at different times.

33'., In a box-covering machine, the combination `with a support, of a unit adjustable to different positions thereon, said unitcomprising a rotatable cam barrel having a plurality of cam slots disposed in different positions longitudinally of the aXis of rotation, a plurality of tools, and followers engaging in said slots for positively advancing and returning said tools at different times.

structure in a direction parallel with the axis of rotation of said cam structure, and a tool carried by said tool support.

35. In a box-covering machine', the combination with a support, of a unit adjustable to different positions thereon, said unit comprising a rotatable 'cam structure. a tool support positively actuated by said cam structure in a Vdirection parallel with the axis ofI rotation of said .cam structure, and a box-engaging roller carried by said tool 'support-and rotatable about an axis fixed in position with respect to said tool suport.

8G. In a box-covering machine,j the combination with a Support, of a unit adjustable to different positions thereon, said unit comprising a vrotatable cam structure, a tool support-positively yactuated by said cam. structure. in a direction parallel with the axis of rotation of' said cam structure, and a box-engaging roller carried by said tool support and rotatable about an axis fixed in position with respect to 'said tool support and extending at right angles to the axisy ot rotation of said cam structure.,

37. In a box-covering machine, the combination with a movable frame, of a member carried by and movable with respect to said frame, a tool carried by said member, and adjustable stop structure for said member comprising a nut, and a rod threaded in said nut and projecting beyondsaid nut to form a stop for said member.

38. In a box-covering machine, the combination with a movable frame, of a member carried by and movable with respect to `said frame, a tool carried by said member,

and adjustable stop structure for said member comprising a nut, and a rod threaded in said nut and projecting beyond said nut to form a stop for said member, said nut detached from and thrusting against said frame, and a spring engaging said frame and nut and opposing the movement of said member and said stop. t

39. In a box-covering machine, the combination with a movable frame, of a member carried by said frame and movable with respect thereto, a pressure block carried by said member, a plurality of rods spaced from each other `and carried `by said frame` ends of said rods forming stops for said member, said rods movable longitudinally with respect to said frame, a nut threaded on each of said rods and disposed in detached relation to said frame and abutting against said frame, and la. spring confined between said nut and said frame to oppose movement of said pressure block.

40. In a box-covering machine,'the combination with a movable frame, of a member yieldingly mount-ed upon said frame, said member having a slot, a pressure block engaging in said slot and carired by said member, and a cam for actuating said frame. l

41; In a box-covering machine, the combination with a support, of a unit adjustable to different positions thereon, said unit comprising cam structure, a tool controlled thereby,'and a gear for rotating said cam structure always in one direction, driving means for said gear, and an adjust-able driving connection between said means and said gear through which said gear is driven for Y all positions of said unit.

42. In a box-covering machine. the combination with a support, of a plurality of units adjustable on said support for operation upon boxes of different dimensions, eac-h of said units comprising cam structure, a tool controlled thereby, and a gear for driving said cam structure. means common to said gears for driving them, and an adjustable driving connection between said 'means and each of said gears for driving said gears in all positions of said units.

' 43. In a box-covering machine, the combination with a support,`of a unit adjustable to different positions thereon and comprising a cam structure, and a 'corner lap member actuatedv thereby. t

44. In aboX-covering machine, the combination with a support, of a unit adjust-4 able to different positions thereonand comprising cam structure rotatable always in one direction, tuated thereby.

45. In a box-covering machine, the combination with a support, of a unit adjust able to different positions thereon and comprising a housing, a plurality of cam structures carried by said housing and rotatable about different axes, means for driving said cam structures, and a tool actuated by each of said cam structures.

46. In a box-covering machine, the combination with asupport, of a unitjadjustable to different positions thereon and comprising a housing, a plurality of cam structures carried by said housing and rotatable about dierent axes, means for driving said canil structures in timed relation to each other, and a tool actuated by veachof said cam structures. l l

47.111 a box-covering machine, the combination with a support, of a unit adjust` able to different positions thereon andcomprising a housing,` a plurality of cam structures carried by said 'housing and rotatable about different axes, avtol actuated by each of said cam'structures, and means common tosaid cam Astructures fordrlvlng them.

48. In a box-covering machine, the -combination with a support, of a unitadjustl able to different positions thereon and comprising a housing, a plurality of cam structures carried by said housing and rotatable about different axes, 'a tool actuated by each -of said cam structures, and means common to said'cam structures fordriving them, a driving member with respect to which said uni't is adjustable, Aand an adjustable driv-4 ing connection between said driving member and said driving means. n 49. In aboX-covering machine, the com-- bination with a support, of a unit adjustable to di'erent positions thereon and comprising a housing, a plurality of cam struc- Itures carried by said housing and rotatable and a corner lap member ac about axes' substantially parallel with each other, means vfor driving said cam structures, anda tool actuated by each of said cam structures.

50. In a box-covering machine, the combination with a' support, of a unit -adjustable to dierent positions thereon and comprising a housing, a plurality of cam strucl turescarried by said housing and rota-table about axes substantially parallel with each other, a frame controlled by each of saidA cam structures and movable substantially parallel with -the axis of rotation thereof, and a tool carried by each of said frames.

51. In a box-coverlng machine, the combination with a support, of a unit adjustable to different posltions thereon and comprising a housing, aplurality of cam structures carried'by said housing and rotatable about dilferentaxes, a corner lapping tool actuated .by one of said cam structures, and

-a tool actuated by another' of. said cam structures.

52. In a box-covering machine,'the combination with a support, of a pair of oppositely disposed units adjustable to 4different vposi-tions thereon tand each compris about different axes, a corner lapping tooll actuated by one of said cam structures, and a tool actuated by another of said cam structures, and a pairl of oppositely d1sposed units adjustable to different positions on said support in directions at right angles msk to the directions of adjustment ofsaid first v named units, each of said last named units comprising a tool and actuating means therefor.

In testimony whereof we have hereunto aliixed our signatures this eighth day of May, 192 v C ARLES H. NI'JQSCH. v

.A THEoDoRE A.A FEDERWITZ. 

